| /* |
| * Copyright (C) 2016 The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file |
| * except in compliance with the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software distributed under the |
| * License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
| * KIND, either express or implied. See the License for the specific language governing |
| * permissions and limitations under the License. |
| */ |
| package com.android.systemui; |
| |
| import android.annotation.Nullable; |
| import android.content.Context; |
| import android.content.res.TypedArray; |
| import android.util.AttributeSet; |
| import android.util.Log; |
| import android.view.View; |
| |
| import com.android.systemui.plugins.PluginListener; |
| import com.android.systemui.plugins.PluginManager; |
| import com.android.systemui.plugins.ViewProvider; |
| |
| /** |
| * Define an interface or abstract class as follows that includes the |
| * version and action. |
| * |
| * public interface MyInterface { |
| * public static final String ACTION = |
| * "com.android.systemui.action.PLUGIN_MYINTERFACE"; |
| * |
| * public static final int VERSION = 1; |
| * |
| * void myImportantInterface(); |
| * } |
| * |
| * Then put in a PluginInflateContainer to use and specify the interface |
| * or class that will be implemented as viewType. The layout specified |
| * will be used by default and whenever a plugin is not present. |
| * |
| * <com.android.systemui.PluginInflateContainer |
| * android:id="@+id/some_id" |
| * android:layout_width="match_parent" |
| * android:layout_height="match_parent" |
| * android:layout="@layout/my_default_component" |
| * systemui:viewType="com.android.systemui.plugins.MyInterface" /> |
| */ |
| public class PluginInflateContainer extends AutoReinflateContainer |
| implements PluginListener<ViewProvider> { |
| |
| private static final String TAG = "PluginInflateContainer"; |
| |
| private Class<?> mClass; |
| private View mPluginView; |
| |
| public PluginInflateContainer(Context context, @Nullable AttributeSet attrs) { |
| super(context, attrs); |
| TypedArray a = context.obtainStyledAttributes(attrs, R.styleable.PluginInflateContainer); |
| String viewType = a.getString(R.styleable.PluginInflateContainer_viewType); |
| try { |
| mClass = Class.forName(viewType); |
| } catch (Exception e) { |
| Log.d(TAG, "Problem getting class info " + viewType, e); |
| mClass = null; |
| } |
| } |
| |
| @Override |
| protected void onAttachedToWindow() { |
| super.onAttachedToWindow(); |
| if (mClass != null) { |
| Dependency.get(PluginManager.class).addPluginListener(this, mClass); |
| } |
| } |
| |
| @Override |
| protected void onDetachedFromWindow() { |
| super.onDetachedFromWindow(); |
| if (mClass != null) { |
| Dependency.get(PluginManager.class).removePluginListener(this); |
| } |
| } |
| |
| @Override |
| protected void inflateLayoutImpl() { |
| if (mPluginView != null) { |
| addView(mPluginView); |
| } else { |
| super.inflateLayoutImpl(); |
| } |
| } |
| |
| @Override |
| public void onPluginConnected(ViewProvider plugin, Context context) { |
| mPluginView = plugin.getView(); |
| inflateLayout(); |
| } |
| |
| @Override |
| public void onPluginDisconnected(ViewProvider plugin) { |
| mPluginView = null; |
| inflateLayout(); |
| } |
| } |